Pop in power hike? It's a concern (10)
I believe the answer is:
enterprise
'it's a concern' is the definition.
(I've seen this before)
'pop in power hike?' is the wordplay.
'pop in' becomes 'enter' (I can't explain this - if you can you should give a lot more credence to this answer).
'power' becomes 'p' (symbol in physics).
'hike?' becomes 'rise' ('rise' can be a synonym of 'hike').
'enter'+'p'+'rise'='ENTERPRISE'
Can you help me to learn more?
(Other definitions for enterprise that I've seen before include "Company" , "Data may be on-board here" , "Project, undertaking" , "Get-up-and-go - venture" , "Initiative - undertaking - business" .)